3 Lansdale 12AU7 / ECC82 Vacuum Tubes 17MM Black Plates Copper Support Rods Early Production Lot Of Three Organ Music I just cleaned this two

I just cleaned this two LP set on my VPI 16

2 milliamps' plate current while Tube Two drew 40

engraved bases and narrow rectangular mica spacers

The dust jacket is pretty nice

3 Lansdale 12AU7 / ECC82 Vacuum Tubes 17MM Black Plates Copper Support Rods Early Production Lot Of Three Organ Music I just cleaned this twoThis lot of three Lansdale (Philco's in house tube manufacturing arm) 12AU7 ECC82 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 50 68, 58 72 and 65 66 where minimum (65%) is 56 56 and 100% is 86 86. It has shiny 17MM black plates; copper support rods; excellent flashing; a top slanted D getter and L1E date codes. This is an early production 12AU7 not a 12AU7A